Definition
Reddit citations are references to Reddit threads, comments, or subreddits inside AI search answers. Reddit was long one of the most cited domains by ChatGPT because its discussions offer authentic, experience-based answers that models favor for product recommendations, troubleshooting, and opinion queries. It sits alongside other UGC citations and social signals as a third-party authority source for GEO.
The landscape shifted in 2026. Reddit's share of ChatGPT Search citations collapsed from roughly 4% to 0.5% in August 2026, as documented in our Reddit citations dropping in ChatGPT report and analyzed in our research on why ChatGPT stopped citing Reddit. The earlier Reddit in AI Search report shows the baseline before the drop.
For GEO teams the implication is not that Reddit is irrelevant, but that no single source is permanent. Track Reddit citation share alongside other community platforms, watch for citation decay when platforms change retrieval behavior, and diversify across YouTube, LinkedIn, and review sites. Brands active in relevant subreddits can use the Reddit marketing feature to monitor how discussions translate into AI visibility.
Examples of Reddit Citations
- A consumer brand tracks its Reddit citation share weekly and notices the August 2026 drop, then shifts attention to YouTube and review platforms.
- A GEO team uses the [Reddit citations dropping](/data/reddit-citations-are-dropping-in-chatgpt) report to brief stakeholders that AI citation sources can change overnight.
- A brand active in r/saas monitors subreddit threads via the [Reddit marketing](/features/reddit-marketing) feature and correlates thread activity with later AI mentions.
- A researcher compares the January 2026 [Reddit in AI Search](/data/reddit-citation-data-jan-2026) baseline with August 2026 data to measure the decline.
